Travel duration calculator

Estimate travel duration from road distance and average speed using uniform motion math.

Formula

time (hours) = distance_km ÷ speed_kmh

The result is formatted into human-readable hours and minutes. Example: 150 km at 75 km/h → 2 hours exactly.

When to use it

Rough ETA planning for highway trips, classroom physics exercises, or logistics back-of-envelope scheduling when traffic is light and steady.

Limitations

Assumes constant speed — no stops, congestion, toll queues, or elevation changes. Urban driving rarely sustains the entered average. Use navigation apps for real-world routing; this is a straight-line time estimate, not map-aware routing.

Example

Entering 150 km at an average 75 km/h yields exactly 2 hours because 150 ÷ 75 = 2. A slower average of 50 km/h over the same distance yields 3 hours. For a shorter hop of 42 km at 70 km/h, the result is about 0.6 hours (36 minutes) after converting the fractional hour into minutes for display.

This skill is available over A2A JSON-RPC and REST. When you already know the skill id and export, call execute directly—no discovery step required.

REST example

curl -sS -X POST https://toolplaza.app/api/helpers/execute \
  -H 'Content-Type: application/json' \
  -d '{"skillId":"time__travel-duration","export":"calculateTravelDuration","args":[10,20]}'

A2A JSON-RPC example

Send POST https://toolplaza.app/api/a2a with:

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "message/send",
  "params": {
    "message": {
      "messageId": "uuid",
      "role": "user",
      "parts": [
        {
          "kind": "text",
          "text": "ignored"
        }
      ]
    },
    "metadata": {
      "toolplaza": {
        "skillId": "time__travel-duration",
        "export": "calculateTravelDuration",
        "args": [
          10,
          20
        ]
      }
    }
  }
}

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